Latitude/Longitude Disclaimer: The gauge location shown in the above map
is the approximate location based on the latitude/longitude coordinates
provided to the NWS by the gauge owner.

Flood Impacts & Photos

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34

Above 34 ft, expect flooding of much of downtown Vancouver, along with major flooding along the Columbia River from Vancouver downstream to Woodland along the Washington side and Portland and Sauvie Island on the Oregon side. Some lower levees may be overtopped.

31

Above 31 ft, expect major flooding. Overtopping of some lower levees is possible. Expect widespread inundation along the Columbia from Vancouver downstream to Woodland on the Washington side and Portland and Sauvie Island on the Oregon side. Tributary rivers will be backed up. Port operations and ship traffic will be affected.

30

Above 30 ft, expect widespread flood inundation along the Columbia from Vancouver downstream to Woodland. Numerous islands and sloughs on the Columbia upstream and downstream of the I-5 bridge are flooded. Many industries along the river have historically ceased operations at this level.

27

Above 27 ft, expect widespread flooding of low lying farmland, islands on the river, and sloughs in the Portland and Vancouver area. Historically, river traffic has been halted to prevent water from overtopping the lowest dikes along the river.

24

Above 24 ft, expect numerous sloughs to begin flooding in the Portland and Vancouver area. Numerous islands on the Columbia river both upstream and downstream from the Interstate Bridge have historically begun to flood at this point. Also expect flooding of parks and lowland areas near the Sandy River confluence above this level.

20

Above 20 ft, expect widespread flooding of unleveed lowland and agricultural land, along with flooding of the access road under the north end of the Interstate Bridge. Islands on the Columbia downstream from the Interstate Bridge are threatened above this level. Access to parks, trails, and some house-boat communities in and near Portland and Vancouver will be impacted.

18

Above 18 ft, expect flooding of unleveed lowland, pasture, and farmland to begin. The main areas impacted have historically been from Sauvies Island downstream to Woodland. There will also be some inundation of parks and trails along the Columbia in and near Vancouver and Portland.

17

Above 17 feet, expect flooding of some lowland access roads, parking areas, and trails on Sauvie Island, around Vancouver Lake, and near downtown Vancouver. Access to some house-boat communities is impaired. Recreation and camping areas at Cottonwood Beach near Washougal and on Government Island are impacted.

16

Above 16 ft, expect flooding of some islands and low areas, with minor impacts for parks and trails along the river.

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.